HIVIZ Tombuster II Fiber Optic Sight Hi-Viz Tom buster II turkey sight Adjustable rear sight Fits shotguns with 1/4" to 7/16" wide vent ribs with removable front bead Shoot Better with bright sights Green Two dot Rear Sight Front and rear combo turkey sight Two dot fully adjustable rear sight with round LitePipe front sight Fits most vent-ribbed shotguns with removable front bead HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.